TDA8783HL/C4,151

ADCs/DACs - Special Purpose Overview

The TDA8783HL/C4,151 is a 10-bit analog-to-digital interface designed for CCD cameras. It integrates a correlated double sampling (CDS) circuit, an automatic gain control (AGC) amplifier, and a low-power 10-bit ADC with a reference regulator. The device supports sampling frequencies up to 40 MHz and features fully programmable bandwidths for CDS (4–120 MHz) and AGC (4–54 MHz). Key electrical parameters include a typical total power consumption of 483 mW, an analog supply voltage (VCCA) of 5 V, and digital output supply voltage (VCCO) ranging from 2.5 to 5.25 V. It operates with TTL-compatible inputs and outputs.

ADCs/DACs - Special Purpose Feature Summary

• Integrated Correlated Double Sampling (CDS), AGC, and 10-bit ADC with adjustable bandwidths
• Fully programmable via a 3-wire serial interface for gain, cutoff frequency, and standby modes
• Includes 8-bit and 10-bit DACs for analog settings and clamp level control
• Low power consumption of 483 mW (typ.) with per-block standby mode capability

ADCs/DACs - Special Purpose Applications

• CCD camera systems
• PC cameras
• Surveillance cameras
• Camcorders
• Digital still cameras

ADCs/DACs - Special Purpose Procurement Notes

Verify the package type LQFP48 (SOT313-2) and ensure compatibility with 5 V analog supplies and 2.5–5.25 V digital I/O levels. Confirm that the design accommodates separate analog and digital ground planes connected via an inductor near the IC to minimize noise. Check serial interface timing requirements against the host controller's capabilities.

ADCs/DACs - Special Purpose Selection Notes

Select this component when a high-speed 10-bit conversion is required for CCD sensors with integrated signal conditioning. Ensure the application can support the 40 MHz maximum clock frequency and provides adequate decoupling (100 nF) on all supply pins. Consider the need for programmable AGC gain (4.5–34.5 dB) and CDS bandwidth adjustment for optimal image quality.

ADCs/DACs - Special Purpose Part Context

The TDA8783 is part of Philips Semiconductors' (now NXP) line of CCD interface solutions. It supersedes earlier data specifications from June 1999. The device is manufactured by NXP USA Inc. and utilizes a plastic low profile quad flat package with 48 leads, measuring 7 x 7 x 1.4 mm.

ADCs/DACs - Special Purpose Replacement Considerations

No direct public substitute part numbers are documented in the provided datasheet. Designers should evaluate functional equivalents based on 10-bit resolution, 40 Msps speed, and integrated CDS/AGC capabilities if the TDA8783 is unavailable.

ADCs/DACs - Special Purpose FAQ

What is the maximum sampling frequency supported by the TDA8783?

The maximum clock frequency (fCLK) is 40 MHz.

How is the AGC gain controlled?

The AGC gain is programmable from 4.5 dB to 34.5 dB in 0.1 dB steps via a 9-bit control input through the serial interface.

What is the purpose of the OFDOUT pin?

OFDOUT is the analog output of an additional 8-bit control DAC, providing a voltage range of 1.4 V (p-p) for system controls such as analog iris control.